Discover advanced TypeScript concepts: Gain insights into compiler flags, generic types, and discriminated unions. Delve into writing error-free code and mastering complex error messages with confidence.

typescript-3.7.5.tar.gz

TypeScript 3.7.5 Strict

TypeScript 3.7.5

Are you using TypeScript, but feel like you’re not making the most out of it? Do you find some advanced TypeScript concepts confusing? Do you get lost looking at complex type errors?

If you answered “yes” to any of these questions, then this course is for you! It introduces you to the world of advanced TypeScript concepts including: compiler flags for catching more errors, generic types, and how to compose types with discriminated unions. 

After finishing this course, you’ll feel more confident in your TypeScript skills. You will be able to write types that detect whole classes of possible runtime errors at compile time. Typing even the most untypeable JavaScript code will be a no brainer for you, and you’ll be fluent in TypeScript error messages.

Advanced TypeScript Masterclass

## Overview

The most common TypeScript error is related to type assignability. We get them whenever we want to use a value of some type when a different type is required. These are the bread and butter of TypeScript. The main goal of the type checker is to ensure that you provide values with correct types wherever required.

Most of the time, type assignability errors are straightforward. The error message says that the type of the right-hand side of the assignment is not assignable to the type of the left-hand side.

# Overview

The most common TypeScript error is related to type assignability. We get them whenever we want to use a value of some type when a different type is required. These are the bread and butter of TypeScript. The main goal of the type checker is to ensure that you provide values with correct types wherever required.

Most of the time, type assignability errors are straightforward. The error message says that the type of the right-hand side of the assignment is not assignable to the type of the left-hand side.

This lesson advises you on how to approach one of the most common TypeScript compile errors.

Strict types

Generics

Composing types

Advanced types

TypeScript in practice

Conclusion

Debugging Errors: Type Assignability

Overview